The filtering channels of single-plate double-position unit may work alternately, contributing to quick screen change-over , easy production and simple maintenance.

单板双工位过滤通道交替工作，换网迅速，便于生产及维护。

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Imagine if you could reference any HTML element rendered on the screen, change its properties, set handlers triggered by events, and modify its appearance — all instantaneously.

设想一下，您将能够引用在屏幕上呈现的任何HTML元素、更改其属性、设置由事件触发的处理程序并修改其外观，而所有这些都能即时实现。而这一切如今已成为现实。

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When flying objects with high speed pass through the laser screen, change of light flux is transformed into electronic signal and sampled by data sampling card and processed by computer.

当高速飞行物体穿越激光光幕时，光通量的变化被转变为电信号并采集到计算机进行数据处理。

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So a loop or an infinite loop, because true is always true, there is no-- nothing on the screen that seems to change this keyword true, so this is actually a deliberate infinite loop, but so was that thing up top to forever say hi or whatever it is you wanted to do.

因此而出现死循环，屏幕上的这些语句无论怎么运行,都无法改变它为真的事实，这就是所谓的死循环，无论你想不想要,屏幕上都会不断打印出“hi“

哈佛公开课 - 计算机科学课程节选

Colored squares on the data tags for airplanes on the controller's radar screen change as pilots respond so that controllers get an extra visual cue in case a pilot doesn't see a message.

WSJ: Texting While Flying: Help for Pilots

Accelerometers are used heavily in the design, and this allows the screen to change orientation simply by turning the phone.

ENGADGET: Checking out MyOrigo's tilt-controlled smartphone

He demonstrated its reach by showing on-screen the change in the ecology of the Tigris-Euphrates basin in southern Iraq, as recorded by satellite photographs, from 1973 to 2000.

BBC: UN launches one-stop green website